Table 6 Regression analysis on the acceptance test of ball-eomuk

Response	Model	F-value	Prob<F	R2	Polynomial equation
Color (Y5)	Quadratic	9.13	0.015	0.901)	3.209 + 0.2172A2) + 0.127B – 0.005612A2 – 0.0355B2 + 0.00113AB
Flavor (Y6)	Quadratic	4.16	0.072	0.8	2.726 + 0.2193A + 0.376B – 0.00533A2 – 0.0982B2 + 0.00225AB
Off flavor (Y7)	Quadratic	11.31	0.009	0.91	-0.669 + 0.5239A + 0.518B – 0.01180A2 – 0.0750B2 – 0.01262AB
Taste (Y8)	Quadratic	2.66	0.153	0.72	3.00 + 0.161A + 0.727B – 0.00472A2 – 0.1334B2 – 0.0012AB
Hardness (Y9)	Quadratic	22.62	0.002	0.95	2.834 + 0.2115A + 0.617B – 0.00676A2 – 0.1276B2 + 0.00675AB
Cohesiveness (Y10)	Quadratic	7.38	0.023	0.88	2.044 + 0.2426A + 0.543B – 0.00661A2 – 0.0968B2 + 0.00112AB
Springiness (Y11)	Quadratic	22.46	0.002	0.95	4.033 + 0.0961A + 0.358B – 0.004191A2 – 0.0857B2 + 0.00563AB
Chewiness (Y12)	Quadratic	8.42	0.018	0.89	3.496 + 0.1566A + 0.219B – 0.00585A2 – 0.0866B2 + 0.01375AB
Overall acceptance (Y13)	Quadratic	9.53	0.014	0.9	1.66 + 0.3923A + 0.501B – 0.01146A2 – 0.1691B2 + 0.0200AB

¹⁾0≤R²≤1, close to 1 indicates regression line fits the model.
²⁾A: Rice starch content (X₁), B: Rice protein content (X₂)